Stimulus-dependent orientation strategies in monarch butterflies.
Stimulus-dependent orientation strategies in monarch butterflies.
复制标题
DOI：
10.1242/jeb.243687
复制
发表时间：
2022-02-01
期刊：
影响因子：
--
通讯作者：
El Jundi B
中科院分区：
文献类型：
--
作者：
Franzke M;Kraus C;Gayler M;Dreyer D;Pfeiffer K;El Jundi B
众所周知，昆虫能够根据天窗线索和视觉地标的组合来跟踪它们的前进方向。这使它们能够回到自己的巢穴，分散在陌生的环境中，以及在繁殖和非繁殖栖息地之间进行长距离迁移。例如，帝王蝶（Danaus plexippus）每年都会从北美向南迁徙到墨西哥中部的某些树木上。为了保持恒定的飞行路线，这些蝴蝶使用时间补偿太阳罗盘，这是在大脑中的一个区域处理的，称为中央复合体。然而，为了成功完成它们的旅程，蝴蝶的大脑必须产生大量的定向策略，使它们能够动态地从太阳罗盘定向切换到朝向特定目标的战术行为。为了研究帝王蝶是否表现出不同的定向模式，以及它们是否可以在它们之间切换，我们在飞行模拟器中观察了系留飞行蝴蝶的定向行为，同时向它们提供不同的视觉线索。我们发现，蝴蝶的行为依赖于所呈现的视觉刺激。因此，当一个黑暗的条纹用于飞行稳定，一个明亮的条纹是固定的蝴蝶在他们的正面视野。如果我们用模拟的太阳刺激代替明亮的条纹，蝴蝶就会改变它们的行为，表现出罗盘方向。总之，我们的数据表明，帝王蝶依赖于不同的方向模式，并在不同的方向模式之间切换，使动物能够根据其实际行为需求调整方向。突出显示的文章：导航帝王蝶采用和灵活切换不同的方向策略。
Insects are well known for their ability to keep track of their heading direction based on a combination of skylight cues and visual landmarks. This allows them to navigate back to their nest, disperse throughout unfamiliar environments, as well as migrate over large distances between their breeding and non-breeding habitats. The monarch butterfly (Danaus plexippus), for instance, is known for its annual southward migration from North America to certain trees in Central Mexico. To maintain a constant flight route, these butterflies use a time-compensated sun compass, which is processed in a region in the brain, termed the central complex. However, to successfully complete their journey, the butterflies’ brain must generate a multitude of orientation strategies, allowing them to dynamically switch from sun-compass orientation to a tactic behavior toward a certain target. To study whether monarch butterflies exhibit different orientation modes and if they can switch between them, we observed the orientation behavior of tethered flying butterflies in a flight simulator while presenting different visual cues to them. We found that the butterflies' behavior depended on the presented visual stimulus. Thus, while a dark stripe was used for flight stabilization, a bright stripe was fixated by the butterflies in their frontal visual field. If we replaced a bright stripe with a simulated sun stimulus, the butterflies switched their behavior and exhibited compass orientation. Taken together, our data show that monarch butterflies rely on and switch between different orientation modes, allowing the animal to adjust orientation to its actual behavioral demands. Highlighted Article: Navigating monarch butterflies employ and flexibly switch between different orientation strategies.
登录
查看更多内容
影响因子：
7.7
作者：
Heinze S;El Jundi B;Berg BG;Homberg U;Menzel R;Pfeiffer K;Hensgen R;Zittrell F;Dacke M;Warrant E;Pfuhl G;Rybak J;Tedore K
通讯作者：
Tedore K
影响因子：
2.8
作者：
Franzke, Myriam;Kraus, Christian;el Jundi, Basil
通讯作者：
el Jundi, Basil
影响因子：
9.2
作者：
Fenk, Lisa M.;Poehlmann, Andreas;Straw, Andrew D.
通讯作者：
Straw, Andrew D.
影响因子：
9.2
作者：
Beetz, M. Jerome;Kraus, Christian;El Jundi, Basil
通讯作者：
El Jundi, Basil
影响因子：
3
作者：
Dreyer D;Frost B;Mouritsen H;Lefèvre A;Menz M;Warrant E
通讯作者：
Warrant E